Puncture kit and adjustable discectomy knife kit

Abstract

The invention relates to the technical field of discectomy knives, in particular to a puncture kit and an adjustable discectomy knife kit. The puncture kit comprises a blade mechanism, a propelling rod and an adjustment mechanism used for adjusting the size of a knife edge of the blade mechanism, wherein the propelling rod is connected with the blade mechanism and the adjustment mechanism respectively. The adjustable discectomy knife kit comprises a positioning needle, a puncture expansion system, a trephining system and the puncture kit, wherein the puncture expansion system comprises a first expansion guide sleeve and a working pipeline; the first expansion guide sleeve is provided with an inner hole used for sleeving the positioning needle; and the working pipeline is provided with an inner hole for insertion of the trephining system and the puncture kit. When in an operation, the knife edge can be adjusted to have the most proper size according to the actual situation for accurate cutting; the cutting operation is accurate and safe; and the adjustable discectomy knife kit can be applied to all lumbar disc herniation operations and posterior lumbar interbody fusion operations.

Description

technical field [0001] The invention relates to the technical field of intervertebral discectomy knife, in particular to a puncture set and an adjustable intervertebral discectomy knife set. Background technique [0002] The intervertebral disc is located between the two vertebral bodies of the human spine. It is divided into the nucleus pulposus in the central part, which is a jelly-like substance rich in elasticity; the fibrous ring in the surrounding part is arranged in concentric circles by multi-layer fibrocartilage rings; the upper and lower ends of the intervertebral disc connect the vertebral body One layer of transparent tissue is called the cartilage plate, one side of the cartilage plate is closely connected with the fibrous annulus, and the other side is connected with the vertebral body, which has the function of protecting the nucleus pulposus from the upper and lower sides. The annulus fibrosus of the neck and waist is thick in the front and thin in the back, ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned intervertebral disc cutter outer sleeve needs to be cut with corresponding surgical instruments such as internal and external rotary cutters, spiral cutters, etc. The shape of these cutters is fixed, and the most suitable size of the blade cannot be adjusted according to the actual situation of the operation.

Especially during the operation, it is necessary to remove the cartilage plate, and then perform the intervertebral fusion technique. The size of the surgical knife for cutting the intervertebral disc in the prior art cannot be adjusted, so it is difficult to remove the cartilage plate of the intervertebral disc, and the intervertebral fusion technique cannot be performed

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